US7239410B2 - Printing system, data processing system and method for confirming job process result - Google Patents

Printing system, data processing system and method for confirming job process result Download PDF

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US7239410B2
US7239410B2 US09/949,709 US94970901A US7239410B2 US 7239410 B2 US7239410 B2 US 7239410B2 US 94970901 A US94970901 A US 94970901A US 7239410 B2 US7239410 B2 US 7239410B2
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printer
job
log information
log
process result
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US20020030850A1 (en
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Kazutaka Matsueda
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Canon Inc
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Canon Inc
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/12—Digital output to print unit, e.g. line printer, chain printer
    • G06F3/1201—Dedicated interfaces to print systems
    • G06F3/1202—Dedicated interfaces to print systems specifically adapted to achieve a particular effect
    • G06F3/1203—Improving or facilitating administration, e.g. print management
    • G06F3/1207—Improving or facilitating administration, e.g. print management resulting in the user being informed about print result after a job submission
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/12—Digital output to print unit, e.g. line printer, chain printer
    • G06F3/1201—Dedicated interfaces to print systems
    • G06F3/1202—Dedicated interfaces to print systems specifically adapted to achieve a particular effect
    • G06F3/121—Facilitating exception or error detection and recovery, e.g. fault, media or consumables depleted
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/12—Digital output to print unit, e.g. line printer, chain printer
    • G06F3/1201—Dedicated interfaces to print systems
    • G06F3/1202—Dedicated interfaces to print systems specifically adapted to achieve a particular effect
    • G06F3/1218—Reducing or saving of used resources, e.g. avoiding waste of consumables or improving usage of hardware resources
    • G06F3/122—Reducing or saving of used resources, e.g. avoiding waste of consumables or improving usage of hardware resources with regard to computing resources, e.g. memory, CPU
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/12—Digital output to print unit, e.g. line printer, chain printer
    • G06F3/1201—Dedicated interfaces to print systems
    • G06F3/1223—Dedicated interfaces to print systems specifically adapted to use a particular technique
    • G06F3/1237—Print job management
    • G06F3/1259—Print job monitoring, e.g. job status
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/12—Digital output to print unit, e.g. line printer, chain printer
    • G06F3/1201—Dedicated interfaces to print systems
    • G06F3/1223—Dedicated interfaces to print systems specifically adapted to use a particular technique
    • G06F3/1237—Print job management
    • G06F3/1273—Print job history, e.g. logging, accounting, tracking
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/12—Digital output to print unit, e.g. line printer, chain printer
    • G06F3/1201—Dedicated interfaces to print systems
    • G06F3/1278—Dedicated interfaces to print systems specifically adapted to adopt a particular infrastructure
    • G06F3/1285—Remote printer device, e.g. being remote from client or server
    • G06F3/1286—Remote printer device, e.g. being remote from client or server via local network
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/12—Digital output to print unit, e.g. line printer, chain printer
    • G06F3/1201—Dedicated interfaces to print systems
    • G06F3/1278—Dedicated interfaces to print systems specifically adapted to adopt a particular infrastructure
    • G06F3/1285—Remote printer device, e.g. being remote from client or server
    • G06F3/1288—Remote printer device, e.g. being remote from client or server in client-server-printer device configuration

Definitions

  • the present invention relates to a printing system for ensuring process results are obtained, such as a paper ejection end, from a printer that receives and prints a print job.
  • the document name for the last job for which paper ejection was terminated normally and printer status data are written in a unique area (an MIB area), and periodically, every ten seconds, for instance, a personal computer in the printing system obtains transmits to the network printer a message to obtain the above information (e.g., a message in which SNMP is the protocol used to SNMP to obtain MIB information), which it then uses to confirm the last end-of-job paper ejection and the status of the printer.
  • MIB area an MIB area
  • a conventional printer issues an event notice each time a page is ejected or when all the pages of a job have been ejected.
  • Such an event notice is issued unidirectionally to a predetermined personal computer on a network that uses the protocol set UDP/IP. Therefore, upon receiving an event notice, a personal computer can use it to determine whether a paper ejection or an abnormality, such as a paper jam, has occurred at the printer, and can, as necessary, take appropriate action.
  • log information is obtained from a printer, and the results of the process performed for a job are determined based on the obtained log information.
  • a notification describing the process results for a job is transmitted by the printer to a data processing apparatus.
  • this notification is not issued, the log information is obtained and the process results for the job are determined based on the log information.
  • information detailing the process results is transmitted to an external device.
  • a predetermined number of information sets are extracted beginning with the latest. And especially when a printer uses a queue to manage log information detailing the process results for individual jobs, a predetermined number of log information sets can be obtained by tracking backward from the queue addition position.
  • the predetermined number of information entries is determined either based on the printer reproduction speed or based on the interval at which log information is accessed.
  • FIG. 1 is a block (functional) diagram showing the configuration of a system according to the present invention
  • FIG. 2 is a diagram showing the control arrangement of a printing system according to the present invention.
  • FIG. 3 is a diagram showing the configuration of a log queue for holding printing results
  • FIG. 4 is a diagram showing a log queue management area
  • FIG. 5 is a diagram showing an example format for a log record
  • FIG. 6 is a flowchart showing the process performed by a server when obtaining the paper ejection results for a job
  • FIG. 7 is a flowchart showing the process used to obtain a printing result log
  • FIG. 8 is a diagram showing a printer data storage file
  • FIG. 9 is a diagram showing a memory map for a storage medium on which the control program for a server is stored.
  • FIG. 1 is a block (functional) diagram showing the configuration of a system according to the present invention.
  • the system comprises: a user application program (referred to as a client) 101 for printing; a printing system (referred to as a server) 102 ; and a network printer (referred to as a printer) 103 connected to the printing system 102 via a LAN 104 .
  • a user application program referred to as a client
  • a printing system referred to as a server
  • a network printer referred to as a printer
  • the client 101 issues a print request (job) to the server 102 , and waits for the ejection end.
  • the server 102 performs, relative to the printer 103 , the transmission of an end-of-ejection event, the notification of enumerated jobs queued for printing, and the notification of enumerated logs indicating the printing results for the jobs.
  • a log is the history acquired for the processing of multiple jobs, and reflected for each job in the log are the transmission source of the job, the number of sheets of paper used for the job, and the end state of the job.
  • the printer 103 When the printer 103 receives a job entry event from the server 102 , the printer 103 adds the job to the queue, processes jobs beginning with the first in the job queue, and ejects paper once the printing for each job is completed.
  • the printer 103 transmits an end-of-ejection event to the server 102 , and as the process result, adds to the log queue the entry “successful ejection”.
  • the printer 103 Upon receiving a job enumeration command from the server 102 , the printer 103 transmits to the server 102 job information concerning a job in the job queue. While relative to the received log enumeration command, the printer 103 transmits log information concerning the log queue to the server 102 .
  • the server 102 Based on the end-of-ejection event, the job enumeration and the log enumeration, the server 102 notifies the client 101 that the paper ejection for the job has been normally completed. If, however, it is ascertained that the paper ejection has not been completed normally, even though the ejection process has been terminated, an “error” message is transmitted to the client 101 .
  • FIG. 2 is a diagram showing the control configuration for a printing system according to the invention.
  • the printing system comprises: the client 101 , the server 102 and the network printer 103 .
  • the client 101 and the server 102 are mounted in a data processing apparatus (host computer), e.g., a personal computer or a workstation computer, and the network printer may be a copier having a printer function or a multi-function machine.
  • host computer e.g., a personal computer or a workstation computer
  • the network printer may be a copier having a printer function or a multi-function machine.
  • the client 101 comprises: a client system bus 201 ; a CPU 202 , for controlling the client 101 ; a hard disk 203 , on which control code (a control program) executed by the CPU 22 is stored; a RAM 204 ; an image manager 205 , for managing jobs generated by a user application; a job manager 206 , for managing job information; a key input unit 207 , consisting, for example, of a personal computer; a display unit 208 , such as a display monitor; a print controller 209 , for controlling printing protocol, such as LPR, which is used to transmit a job to a printer; a communicator 210 ; and a server communicator 211 , for performing a communication process, such as a RPC (Remote Procedure Call), and for communicating with the server 102 .
  • a client system bus 201 for controlling the client 101 ; a hard disk 203 , on which control code (a control program) executed by the CPU 22 is stored; a RAM 204
  • the job When a job is entered by the user application in the client 101 or an external personal computer, the job is stored in the image manager 205 , while the job information is managed by the job manager 206 using a queue format such as an FIFO.
  • a queue format such as an FIFO.
  • the server 102 comprises: a server system bus 220 ; a CPU 221 for controlling the server 102 ; a hard disk 222 , on which the control code (control program) executed by the CPU 221 is stored; a RAM 223 ; a client communicator 224 ; an ejection discriminator 225 , for determining whether paper ejection for a job has been normally performed by the printer 103 ; an event receiver 226 , for receiving an event notice from the printer 103 ; a job enumerator 227 , for enumerating jobs in the printer 103 ; a log enumerator 228 , for referring to a printing results log stored in the printer 103 ; and a printer I/F 229 , for setting or analyzing the protocol employed for printer 103 and client 101 transactions.
  • a job image received from the user application is managed by the image manager 205 , while the job information is managed by the job manager 206 , and a printing request is transmitted to the server 102 by the server communicator 211 . At this time, the printing request does not include print data, such as image data.
  • the server 102 which manages the printer 103 , receives requests from multiple clients 101 , and as soon as the printer 103 is available, transmits a print start response to the clients 101 through the client communicator 224 . At this time, the server 102 inserts the allocated print ID into the print start response.
  • the client 101 Upon receiving the print start response, the client 101 transmits a job to the printer 103 via the print controller 209 and the communicator 210 , together with the print ID included in the print start response.
  • the printer 103 adds the received job to a printing queue, from which it sequentially selects printing jobs beginning with the first received.
  • the job enumerator 227 of the server 102 transmits to the printer 103 a request for job information stored in the printing queue, and in return the printer 103 transmits all of the stored information to the server 102 .
  • the log enumerator 228 then issues a log information request to the printer 103 , and in return the printer 103 transmits the requested information to the server 102 .
  • the printer 103 When the printer 103 has printed a specific job and ejected the paper, it transmits an event notice to the server 102 that includes the print ID allocated for the job. This event notice is received by the event receiver 226 .
  • the printer discriminator 225 determines the printed results for the job based on information received from the event receiver 226 , the job enumerator 227 and the log enumerator 228 .
  • the results that are output are transmitted to the client 101 through the client communicator 224 and the server communicator 211 , and are relayed to the user application by the client 101 .
  • FIG. 3 is a diagram showing the structure of a log queue, stored in the printer 103 , in which printing results are maintained.
  • FIG. 4 is a diagram showing a management area for the log queue.
  • a log queue 301 is managed based on the log queue management area.
  • the log queue 301 is a ring buffer, and after information has been written in the last record, the information is then written in the first record.
  • the number of log records 401 indicates a fixed number allocated for each printer.
  • a WritePointer 402 is a record in which the next printing results are registered, and especially indicates the number of records beginning with the first.
  • a ReadPointer 402 is a log that is read when the log of the printer 103 is accessed by remote control. This ReadPointer 403 , as well as the WritePointer 402 , indicates the number of records beginning with the first.
  • a size per record 404 represents the number of bytes of data entered in a log for one record. When this size 404 is read by a remote device, the memory size required for reading the log is obtained.
  • a record pattern 405 indicates the storage pattern of the parameters included in one log. That is, the record pattern 405 indicates one of the predetermined formats used for a log.
  • FIG. 5 is a diagram showing an example format.
  • an external device can refer to all the logs, it may refer to the management area in FIG. 4 in advance and read a log from the ReadPointer 403 , or it may read multiple logs beginning with one acquired by tracking backward a predetermined number of logs from the WritePointer 402 .
  • the ReadPointer 402 may be operated by multiple external devices. Further, when a predetermined number of logs are tracked backward from the WritePointer 402 , a check is performed to determine whether the log has been written to the last record. When the log is written to the record, the logs must be tracked backward by skipping from the first record to the last record.
  • the structure of one record includes a document name 501 , for a print job; a user name 502 , for the a user who entered the job; a machine name 503 , for the personal computer that transmitted the job; a print ID 504 , for identifying the job; a print result 505 , indicating that the printing was normally terminated, i.e., that paper ejection was normally terminated, or that the job was terminated by being interrupted by a user or by the occurrence of power cutoff; the number 506 of A 3 printed sheets, indicating the number of A 3 sheets output during the printing of the job; the number 507 of B 4 printed sheets; the number 508 of A 4 printed sheets; and the number 509 of printed postcard size sheets.
  • the numbers of various other types of sheets printed are also included.
  • FIG. 6 is a flowchart for the process performed by the server 102 when obtaining the paper ejection results for a job.
  • a job is transmitted to a network printer, the printer 103 , using the LPR protocol.
  • monitoring of the printer 103 , to which the job was transmitted, is begun. Specifically, event notices issued by the printer 103 are monitored, the job information is periodically monitored, and depending on the situation, the monitoring of the print logs in the printer 103 is begun.
  • step S 603 a check is performed to determine whether an end-of-ejection event has been received from the printer 103 . If the event has been received, program control advances to step S 604 , and the ejection confirmation processing is performed. When and event has not been received, program control is shifted to step S 605 , and a check is performed to determine whether a job enumeration time has expired.
  • program control returns to step S 603 . But if the job enumeration time has expired, program control advances to step S 606 and a job enumeration command is transmitted to the printer 103 . Then, the job information for all the print jobs in the printer 103 is obtained.
  • step S 607 a check is performed to determine whether a job having a specific print ID allocated by the server 102 is included in a printing queue. When there is such a job, it is assumed that the paper ejection has not been completed and the pertinent job is still present in the printer 103 . This fact is confirmed, and program control returns to step S 603 . When the pertinent job is not present in the printing queue, program control advances to step S 608 , a log enumeration command is transmitted to the printer 103 , and the print result log is obtained. Then, the log for the pertinent job is searched for among the coupled logs in the log queue. This search is performed based on the print ID entered in the record.
  • step S 609 the print results for the pertinent log record are examined to determine how the job was printed.
  • program control advances to step S 611 and the ejection confirmation processing is performed.
  • program control is shifted to step S 610 .
  • the user application In the ejection confirmation processing at steps S 604 and S 611 , the user application is notified that the paper ejection was confirmed, and this message is displayed on the display unit 208 . While in the abnormality end process performed at step S 610 , for example, the user application is notified that all the pages of the job could not be completely ejected, and this message is displayed on the display unit 208 .
  • FIG. 7 is a flowchart showing the process performed at step S 608 to obtain a print result log. During this process, not all the print result logs are obtained; only a required number of logs are selectively acquired.
  • a check is performed to determine the printer from which a log is to be received, and the name of the printer is obtained. This printer name may be either the name of a printer object selected by a user, or the printer name received directly from the user application.
  • this printer name is searched for in a printer data storage file shown in FIG. 8 , and the number of sheets printed by the printer in one minute is obtained. Using this printed sheet count, the minimum printing time for one sheet is obtained. For example, when the number of sheets printed in one minute is four, the minimum printing time for one sheet is 15 seconds. The minimum printing time for one sheet is calculated at step S 702 .
  • FIG. 8 is a diagram showing the contents of a printer data storage file.
  • the printer data L- 2260 , L- 950 and L- 840 are included as printer names.
  • the printer having the printer name L- 2260 is a color printer that is duplex printing capable, has a 7-bin tray, and can print four color sheets or 16 monochrome sheets a minute.
  • An L- 950 printer can print 24 sheets a minute, and an L- 840 printer can print 16 sheets a minute.
  • the number X of log records to be obtained (the number of logs to be obtained) is calculated using the log enumeration interval and the minimum printing time for one sheet. For example, when the log enumeration interval (interval for obtaining a log) is 60 seconds and the minimum printing time for one sheet is 15 seconds, the acquisition of four or five logs will be satisfactory, and not all the logs need be enumerated. That is, the number of logs must be obtained that is equivalent to the maximum number of jobs the printer 103 can process.
  • a value N for the WritePointer 402 in the log queue management area is obtained.
  • the total number M of logs is also obtained.
  • the number X of logs is subtracted from the value N of the WritePointer 402 , and a check is performed to determine whether the obtained value is a negative value. If the value is not negative, program control advances to step S 707 , and the logs are obtained by tracking backward X number of logs from the record indicated by the current WritePointer 402 entry. But if the value at step S 706 is negative, program control advances to step S 708 . In this case, the log should be referred to beginning at the position where the reading is returned to the end of the queue as the ring buffer.
  • a check is performed to determine whether the data is present at the end of the queue.
  • program control advances to step S 711 , and the log is obtained at a position obtained by tracking further backward from the end. That is, the logs from the first to the (N ⁇ 1)th log in the queue and (X ⁇ N)+1 logs from the end of the queue are obtained. In other words, X logs, beginning with the from M ⁇ (X ⁇ N) ⁇ 1-th log, are obtained.
  • program control advances to step S 710 , and N ⁇ 1 logs beginning from the first are obtained.
  • step S 712 the log having the print ID of a target job is searched for in the group of logs that have been read, and the print result for the log is obtained.
  • FIG. 9 is a diagram showing the memory map for a storage medium on which the control program of the server 102 is stored.
  • a program for receiving an event notice from the printer 103 a program for obtaining job information for a job in the printer 103 , a program for displaying the status of the printer 103 , a program for obtaining printing results from the printer 103 , a program for employing a printer name to calculate the number of print result logs to be obtained, a program for calculating a log acquisition start position, and a program for determining the paper ejection results for a job.
  • information for managing the group of programs stored on the storage medium e.g., version information and creator names, is also recorded. Further, information that depends on the OS in use when the programs are read, e.g., icons for identifying and displaying programs, may also be stored.
  • the objective of the invention can also be achieved by supplying to a system or an apparatus (or a CPU or an MPU) a storage medium on which software program code that implements the functions of the embodiment is recorded, and by permitting the system or the apparatus to read and execute the recorded program code.
  • the program code read from the storage medium provides the functions of the invention, and the storage medium on which the program code is recorded constitutes the present invention.
  • the storage medium for supplying the program code can be, for example, a floppy disk, a hard disk, an optical disk, a magneto-optical disk, a CD-ROM, a CD-R, a magnetic tape, a nonvolatile memory card, a ROM or an EEPROM.
  • the objective of the invention can also be achieved by supplying to a system or an apparatus (or a CPU or an MPU), via e-mail or across a network, a storage medium on which software program code implementing the functions of the embodiment is recorded, and by permitting the system or the apparatus to read and execute the recorded program code.
  • program code read from a storage medium, can be written in a memory that is mounted on a function expansion board inserted into a computer, or in a function expansion unit connected to the computer, and in consonance with instructions in the program code, a CPU mounted on the function expansion board, or in the function expansion unit, can perform part or all of the actual processing required to implement the functions of the above described embodiment.
  • the ejection confirmation process for a job can be accurately performed at high speed.
  • the printing confirmation required following the acquisition of a log can be performed at high speed, and the loads imposed on a network and on the printer can be reduced.

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  • Physics & Mathematics (AREA)
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  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
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JP2000278187A JP4109821B2 (ja) 2000-09-13 2000-09-13 情報処理装置及びジョブの処理結果確認方法

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JP4109821B2 (ja) 2008-07-02
US20020030850A1 (en) 2002-03-14

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